Leer



June 10, 1930. J, MAYO 1,762,340

LEER

Filed Oct. 1, 1927 2 Sheets-Sheet 1 J anbawtoz 35 Silica mag June 10, 1930. J. MAYO 1,762,340

LEER

Filed 001;. l, 1927 2 Sheets-Sheet 2 Patented June It), IQSU JOHN MAYO, F FAIRMONT, WEST VIRGINIA, ASSIG-NOR TO THmAL ENGINEERING CORPORATION, 0]? LONG ISLAND CITY, NEW YORK, CORPORATION 015 NEW YORK LEER Application filed. October 1, 1927. Serial No. 223,4Al9.

This invention pertains to leers for annealing glassware. It covers means for controlling the heat and regulating the temperature throughout the leer.

The invention has particular utility in fireless leers of the type disclosed in copending application of Orie Shackelford, Ser. No. 187,470, filed April 29, 1927. For convenience of description, therefore, the

present invention is illustrated and described as an improvement on the Shackelford leer.

In order that a fireless leer may be adaptable to various sizes of ware it is 5; advantageous to be able to vary the effectiveness of the heat insulation at certain zones in the leer, thereby making it possible to raise or lower the temperature in those zones and thus control the rate of temperature drop through the leer.

In fireless leers the heat is all sup lied by the ware itself as it enters the leer resh from the molding machine, no additional heat being supplied from other sources. Under such circumstances it is evident that heavy ware will radiate more heat than light ware. For instance, bottles weighing twenty ounces each entering the leer at four second intervals will have more excess heat to dispose of than bottles weighing five ounces each at three second intervals.

In one case there are 300 ounces of hot glass entering the leer per minute and in the other case only 100 ounces of glass.

Insulation suitable for the heavy pieces of ware would be too light for the light ware.

The principal object, therefore, of the present invention is to provide means whereby the amount of radiation at any part of the leer may be varied at the will of the operator.

For this purpose the roof of the leer is provided with insulation in the form of layers or leaves which may readily be made 5 effective or ineffective as necessary. The same principle may be applied to other walls of the leer if desired, but in practice it has been found that the proper loSIlltS are secured by using the leaf insulation on only the roof of the leer.

Further and dther advantages will be hereinafter set forth in the accompanying specification and claims, and shown in the drawings, which by way of illustration show what is now considered to be the preferred embodiment of the invention.

1 Fig. l is a side elevation of the complete eer.

Fig. 2 is an enlar ed sectional elevation.

through a portion 0 the leer showin the leaf insulation in various positions 0' adjustment.

F Fig. 3 is a cross section on line 3-3 of Fig. 4 is a top plan view of a-portion of the roof of the leer showing two leaf sections, one leaf being in elevated position.

As shown in Fig. 1, the leer compirses a long oven-like structure 10 into which the pieces of ware enter one at a time at the right end, to be distributed into rows crosswise of the leer and then conducted throu h the leer by conveyor rollers12 to the discharge opening at the left end of the leer. The leer has a brick bottom 14 and brick walls 16, (Fig. 3). The roof is also of brick in those sections not provided with the adjustable leaf insulation which is the subject matter of the present invention. Y

The conveyor rollers 12 which form the floor of the leer are driven by motor 18 through chains 20 and 22.

Above the annealing chamber of the leer.

is a muffle furnace 24 provided with a stack. 26. This muffled furnace is used only when starting the leer or during periods of teminsulating material, the lower leaf resting on the stationary roof 41 and on one of the angles 42. The angles 42 serve to support one end of the insulating leaves 44 when raised. vAs shown there are four leaves in each stack, but any appropriate number may be used. 7

In Fig. 1 and at the right of Fig. 2 all leaves are shown in down position so that heat to escape through them -must pass through all four leaves.' In the second section, from the right in Fig. 2- one leaf has been raised out of contact 'with the other said leaves in inefiective insulating position whereby" the radiation of heat from said leer may be controlled.

In vtestimony whereof I hereto afix my si nature. JOHNMAYO.

leaves, thereby removing one-fourth of the heat insulation from that roof section and increasing radiation therefrom accordingly. Each succeeding section to the left in-Fig. 2 shows one more leaf raised until, in the last section all leaves are raised and the sta tionary roof 41 of the leer is in direct contact with the outer air.

As will be apparent, this construction obviates the need of hinges for the leaves, as

well as all necessity for any mechanism,

aside from prop 46, for holding the leaves in raisedposition. The construction therefore aflords 'an exceedingly simple, cheap,

easily operated and effective means for conheat insulating material and means for adtrolling the amountof radiation from any section or zone of theleer.

The above described leaf construction may be applied throughout the length of the leer or only in selected portions of the leer, as is found most suitable for the particular work to be done.

It is to be understood that the inventionis not limited-to the specific construction herein illustrated and described, but can be embodied in other forms without departure from its spirit, as defined by the appended claims. i

I claim: 1. A roof for a leer comprising leaves of justing said leaves relatively to each other in order; to control the amount of heat radiated through said roof.

v 2. A roof for a leer comprising a pluralityof stacks of insulating leaves, said leaves being adjustablerelatively to each other for the purpose of controlling the amount of heat radiated from different portions'of said leer.

3. roof for a leer, comprising a plurality. of leaves of; heat insulating material resting one\above the other on said leer, and means for supporting one or more of 

